How to add specific IP address in squid proxy server.

 To allow specific IP addresses to access your Squid proxy server, you will need to modify the Squid configuration file. Here are the steps to do it:

1. Open the Squid configuration file in your preferred text editor. The configuration file is usually located at /etc/squid/squid.conf.

2. Scroll down to the "Access Controls" section of the configuration file.

3. To allow a specific IP address, add the following line to the configuration file, replacing xxx.xxx.xxx.xxx with the IP address you want to allow:

   css
   acl allowed_ips src xxx.xxx.xxx.xxx
   

4. To allow access to the Squid proxy server only to the IP addresses that you have allowed, add the following lines to the configuration file:

   css
   http_access allow allowed_ips
   http_access deny all
   

   This will allow access only to the IP addresses that you have defined in the allowed_ips ACL and deny access to all other IP addresses.

5. Save the configuration file and restart the Squid service to apply the changes. The command to restart the Squid service may vary depending on your operating system, but it is usually one of the following:

   systemctl restart squid
   service squid restart
   

That's it! The IP address you added to the allowed_ips ACL should now be able to access your Squid proxy server.